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https://issues.apache.org/jira/browse/TUSCANY-1113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christian Landbo Frederiksen updated TUSCANY-1113:
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Attachment: SDOXSDEcoreBuilder.java
Here is the rather ugly version with the methods copied down from
XSDECoreBuilder...
> Extensible namespaces and types that change
> -------------------------------------------
>
> Key: TUSCANY-1113
> URL: https://issues.apache.org/jira/browse/TUSCANY-1113
> Project: Tuscany
> Issue Type: Improvement
> Components: Java SDO Implementation
> Environment: Eclipse, EMF 2.2.1
> Reporter: Christian Landbo Frederiksen
> Attachments: SDOXSDEcoreBuilder.java,
> TestTypeChangesAndExtensibleNamespaces.java, XSDHelperImpl.java
>
>
> Once an xml-schema with a namespace is defined (XSDHelper) you cannot define
> other schemas with the same namespace.
> I would like namespaces to be extensible.
> Once the types of a schema is defined you cannot change them by defining an
> altered version of the schema.
> I realize the dangers of modifying already defined types but I believe i
> ought to be an option.
> Summary from:
> http://www.mail-archive.com/tuscany-user%40ws.apache.org/msg00624.html
> An xml schema is uploaded and SDO is used to generate a form for
> submitting data as xml-instances of the schema.
> New schemas in the same namespace may be added often resulting in new
> forms (this is the first issue where I need to extend existing
> namespaces).
> Xml instances may later be edited again.
> This is the most common use case and SDO seems to support this very
> well.
> BUT xml schemas may be modified, even individual types.
> This of course flagged some warning signs and schema versions were
> considered.
> But 'use at own risk' was chosen because of its simplicity. To support
> this strategy a status/mode will be introduced so xml-instances cannot
> be edited while schema is in 'administration'-mode. This ought to handle
> the case with instances at schema-modification time.
> With regards to serialized xml instances any data that is rendered
> invalid with type changes will be reset/deleted as of design.
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